11.24: Two wave pulses travel to the righ 00 dkm9ojnx1x pzh e)qj36u4 4wguo0.tia;qmt toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one xgzwj4mikj.xmqo0p;0qaoh t 61n30 )ud4u9eof the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passg xpvznq9q597wg)j 7pes through the air and strikes the surface of a plastic block. Which pair of sppq 7wz 9)x n7vgq5gj9tatements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passew72 1s5z 5klv2zxlajys straight downward through the point labeled B in the diagram shown. v k 5y72wz15jl xz2alsThe ray reaches a flat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs wheneveljvmd v.u f7;5fmh 4-poe)u)hr light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while ))he;q-t sg qjstanding in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirr)s-;gqq h)e jtor?

  14.25: It is observed that a light ray changes direction whw jaf)sjbz3dyn0 ) i.7en it enters a new material. Which one of the follo0d3) j swyz7.ianjf) bwing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wa7 )mrk- .80nfgeonq7fb ts ;javelength 400 nm in a transparent material fqm);f7nbkj ogt08sr-7ne.a. What is the index of refraction of the material?

  98.04: As sound travels froms))ca mr4lz 8a steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a dicum* hf)c7 gxhakrj+0b /)q g,fferent index of refraction which of the following wav/gmhu,ghc7)bq )c f+ xjar0* ke properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of sinn4 9uquzkp y9v66/xdv80 ftczgle frequency travels from air (with speed of sound 340 m/s) into rock fu96dx vzv9 / 6ynz up0k8t4qc(with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swktv8 n:17l:/in dgokeimming pool emits a sound wave that travels toward the surface of the wa:o: 7dt nke1/lkvign8ter. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of7kr- fy2dt, lw white light strikes a rectangular glass block with an angle w-f2,lyd7 trkof incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed towa f0 m3m-p vc5yqgs,9uzrd a point P on a boundary as shown to the right. Which segment best represents the refracted ray?-5m9 3gzf v0pqcy,mus

  98.17: Which diagram best represents wgk: u+aotd* 3phat happens to a ray of light entering air from water? Air is at the top in all diagrg3oa* :du+tpk ams.

  94.11: The critical angle of a material is the anglklf bd8y94p-fn,4 viie of incidence for which the ,kfdiv9 pl8 4yf inb-4angle of refraction is:

  95.12: The principle underlmhegiu ee06*;b31ny n ying fiber optics is:

  98.36: The critical angle in a transparent substancyqya-6 8qc b4ioapyg8u , o7d7sd(e/fe surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from matu i 5w)sqqkfq 2gt,/r,erial X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speed o,q2) iu s,tw5rgqq/kff light in material X?

  03.15: A jeweler can distinguish between a diamond emvj3i.vw )j7and a piece of glass by observing the critical angle jwejv3m7 iv). of the light in each material. Glass with an index of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear mater r2-t3ch0 e*7wecmnptial. When the light makes an angle of incidence equal to 2ncw0*er ctth7 -m3pe$30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a maww7 tdu7 ldu39terial of index of refraction n. The laser beam emerges fld97t wd w7u3urom the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shft3lyuk s1 lw,+s *u7vown in the accompanying figure. What is true about the respective indices of refraction (n1, n2wtlys7 1u3lvs,fuk * +, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 i 7 367;rf2a2nynl.oqu i kktmto medium 3 as shown in the diagram. What may be concluded f ;u7nn aiq3klmy.7io22t6k r about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagar6j d , :p5op yvhrhlht,:)szn9e+;u ram shows the path that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the fz,+6aj5 pnl:,rpsot;9e h udh )v:yrh ollowing best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic ligc w +5)yac0me mvs4+gyht ray traveling through three med +0y+yem4vawsgc )m5cia.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling vdh3g5p.s6 bugv13jwb foz::5rm cb. in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light iel/fs47)d u; oth+wv rs incident on the surface of a rectangular block of glass at an wr/+74f;es v)ould htangle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600ncz) q+od-h;c ar p0z6bm is transmitted from air into a piece of glass. Which one of the labeled arrows best indp0zaco+b6-h; ) rdc zqicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass9*l 0rc22k:g 9iz9:jfwhcak5ylju at as shown. The glass has an index of refraction of 2.00 and it is surrounded byl*a29hj f0ulj9kg5ya ct zck r9: 2w:i air. Which one of the lettered rays shows the path of the light after it exits the glass?